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A doctor pulled a gun of his own when a patient opened fire at the Mercy-Fitzgerald Wellness Center in Yeadon, PA. The suspect, Richard Plotts, shot and killed his caseworker, according to investigators. Now police are looking into where the suspect obtained his weapons. Christine Maddela has more. (Published Monday, July 28, 2014)

Updated at 4:13 AM EDT on Tuesday, Jul 29, 2014

A Delaware County wellness center is open for business again after a shooting last week that left a caseworker dead and a doctor injured.

The suspect in the shooting at the Sister Marie Lenahan Wellness Center located on the Mercy Fitzgerald Hospital campus along Lansdowne Avenue continued to await arraignment after suffering gunshot wounds when the doctor returned fire.

Richard Plotts, a 49-year-old psychiatric patient with a history of run-ins with the law, remained hospitalized Monday morning after being shot by the doctor, identified as Dr. Lee Silverman.

The wellness center remained closed Friday but reopened Saturday and again as scheduled Monday morning. Services at the center include walk-in X-rays and lab services, according to the hospital's website.

New Details on Wellness Center Shooting Suspect

More information is being revealed about a patient who allegedly shot his doctor and case worker at a local Wellness Center. (Published Saturday, July 26, 2014)

Plotts, whose past includes time in mental health facility and guilty verdicts for disorderly conduct and firearms violations, and guilty pleas to assault and forgery charges, faces 10 counts related to the wellness center shooting including first-degree murder, criminal homicide, aggravated assault, weapons and related charges. Authorities have yet to set an arraignment date.

Plotts had 39 unspent bullets on him when he was wrestled to the ground at Mercy Fitzgerald Hospital in Darby, just southwest of Philadelphia, and police believe he had planned to use them.

"If the doctor did not have a firearm, (and) the doctor did not utilize the firearm, he'd be dead today, and I believe that other people in that facility would also be dead," Delaware County District Attorney Jack Whelan said.

New Details in Relationship Between Hospital Shooter and Victims

New information continues to come in regarding Richard Plotts and his history with the victims. (Published Friday, July 25, 2014)

"We feel like we lost a family member," said Hunt's neighbor Marge LaBrum. "When we used to say to her, 'Theresa, how do you take care of them when they're mentally ill and could hurt you?' she said 'It's a chance I have to take because I have to take care of them.'"

"We are thankful for the swift action of Dr. Lee Silverman, Dr. Jeffrey Dekret, John D’Alonzo and the other colleagues and visitors who took brave and difficult action during yesterday’s tragic event. We extend our condolences to Theresa Hunt’s family, and we are praying for Dr. Silverman’s speedy recovery. We look forward to Dr. Silverman’s return to serving patients at our hospital. We will do all we can to support the victims during this difficult time," the statement read.

Hospital officials did not confirm whether they may consider changing the 'no guns' policy in light of the incident but said, "We are reviewing our policies and procedures to ensure a safe environment."